Surname Khoyan (Khoyan 
) , in the entire world, is a very rare last name. The last name Khoyan is habitual in France, where it is a very rare surname, Spain, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it is the most numerous in the United States, India, and France. Also, Khoyan is the forename as well as the last name.